Woo hoo! I found something that no one else posted on this site before me!
Haha, I just read about this on HBO. A guy put up a fake (presumibly) Halo 2 game and the bidding got real damn high! $99,999,999.00
"How to be stupid, in public
Yesterday, we got word from tyler holt that a rather bizarre auction was going on over at eBay. Someone who'd registered on Thursday had started an auction for a Halo 2 pre-release playable game. There was a bit of discussion in our forum about this - many people warned the bidders that this was likely not real. By yesterday evening, things had gotten out of hand; the bidding, which had been creeping up by $50s and $100s all day, suddenly started jumping by thousands. At 11:38 pm (PST), the bid had reached $100,000. By 15 minutes after midnight, it peaked - at $99,999,999.00. And that's where it closed, at 7:15 this morning. It's quite possible this page will be yanked by eBay - there's fraud on all sides, more than enough to go around - so we've put up a static (no working links) local copy. The exception is the Bids link - that works, and points to another local page. Bungie's been alerted - but I'm really doubting this is anything but a scam, in any case. (Louis Wu 20:37:01 UTC) (permalink)"
http://halo.bungie.org/ - Read about it here
http://nikon.bungie.org/misc/ebay_halo2fraud/ - Or take a look for yourself here.
My god, what a scam. Pritty amazing bids too.